Line shock absorber



Oct. 19, 1937. Q B ENGUSH $096,392

LINE SHOCK ABSORBER Filed May 13, 1936 2 Sheets-Sheet l I nventov aw/6 a zn mz Oct. 19, 1937.

O. B. ENGLISH LINE SHOCK ABSORBER Filed May 13, 1936 2 Sheets-Sheet 2 and g A llomeys Patentec lOct. 19, 1931 PATENT OFFECE LINE SHOCK ABSORBER Orville B. English, Okmulge, Okla.

Application May 13,

4 Claims.

. absorber, and particularly to a line shock absorber especially adapted foruse in supporting the line between the spudding pulley and the bullwheel of oil well drilling apparatus, and an important object of the invention is to provide a simple, in-

expensive, and efficient shock absorber of this character.

Another important object of my invention is to provide a shock absorber of the character indicated which can be easily threaded by one man,-

and which is easily operable and maintained.

Other important objects of my invention will be apparent from a reading of the following description taken in connection with the drawings, wherein for purposes of illustration I have shown a preferred embodiment of my invention.

In the drawings:-

Figure 1 is a general side elevational view showing the device of the invention mounted in connection with a line running between a bullwheel and a spudding pulley.

Figure 2 is a transverse vertical sectional view taken through Figure 1 approximately on the line 2-2.

Figure 3 is a horizontal sectional View taken approximately on the line 3--3 of Figure 2. and looking downwardly in the direction of the arrows.

Referring in detail to the drawings, the numeral 5 generally designates the line shock absorber of the present invention which comprises the plate 6 which is U-shaped in cross section and acts as the base on which are welded the threaded sockets l and 8 which are welded as indicated by the numerals 9 and 19, respectively, to the web "of the base 6 and within the side flanges thereof.

Threaded into the sockets l and 8 are the pipes I l and I2 forming the standards of the shock absorber, and these pipes are slotted as indicated by the numerals l3 and M, respectively, adjacent their upper ends. The upper ends of the pipes are open.

Intermediate portions of the sides of the pipes H and I2 are traversed by thebracing bolts I5 and I6, while above the bolts 15 and I6 are bolts or rivets I1 and I8 which are arranged to form the supports for the lower spring plates 19 and 29, respectivelyQon which rest the lower ends of the helical springs 2| and 22 which are inserted thereabove in the pipes H and I2. Seated within the upper end of the pipes II and I2 above the slots l3 and I4 are the top spring plates 23 and 24 which compressibly engage the upper ends of the springs 2| and 22.

Journal blocks 25 and 26 are slidably mounted 1936, Serial No. 79,577

in the upper part of the pipes II and I2, respectively, between upper and lower portions of the respective springs 2| and 22. The grooved wheel 21 on which the line 28 runs has a hub portion 29 from the opposite sides of which project the reduced pintles 39 and 3| which turn in the journal blocks 25 and 26. The hub 29 properly spaces the journal blocks by bearing against the radially inward faces of the blocks, and in a manner to properly support the grooved wheel 2'! between the standards II and 12. The pintles 39 and 3! work through the slots l3 and 14. With the weight of the line 28 on the grooved wheel 21, the upper and lower portions of the springs 25 and 22 act and react in accordance with the weight and pressure of the line.

For adjusting the compression of the springs 2i and 22 adjusting bolts 32 and 33 are supported in cross members 34 and 35 which are fixed to the upper ends of the standards. These bolts 32 and 33 engage the top spring plates 23 and 24, and respective lock nuts 3'6 and 31 are provided on the bolts 32 and 33 above the cross members 34, 35 to lock the screws in the adjusted positions.

Locking pins 33 and 39 traverse the lower part of the pipes II and I2 and the sockets i and 8, so as to prevent turning of the pipes in the sockets.

A diagonal brace 49 suitably fastened to the supporting surface 42 by the means generally indicated at 4|, has its upper end engaged with the respective one of the bolts IT and it, said bolts having springs 43 which engage the opposite side of the respective standards, so that the connection to the standard of the brace 49 is springpressed and slidable on the axis of the bolt.

Although I have shown and described herein a preferred embodiment of my invention, it is to be definitely understood that I do not desire to limit the application of the invention thereto, and any change or changes may be made in the materials, and in the structure and arrangement of the parts, within the spirit of the invention and the scope of the subjoined claims.

What is claimed is:

1. A line shock absorber comprising stationary standard means, duplex vertically acting spring means on said standard means, said spring means involving individual spring assemblies each comprising a journal carried thereby, and a grooved wheel having pintles projecting from its opposite sides and journaled in the corresponding journals.

2. A line shock absorber comprising a pair of standards, a spring on each standard, a journal on each standard and supported by the correspending spring, .a line pulley located between said standards and having pintles turning in said journals, each standard having a tubular part enoasing the corresponding spring and journal and formed with an opening through which the related pintle projects.

3. A line shock absorber comprising a pair of standards, a spring on each standard, a journal on each standard and supported by the corresponding spring, a line pulleylocatedbetween said standards and having pintles turning in said journals, eachstandard having. a tubularpart, the corresponding spring comprising a helix, a

stop in said tubular part engaged by the lower end of the spring, and a longitudinally. adjustable stop at the upper end of said tubular part engaging the upper end of said tubular part and engaging the upper endof the spring and adjustable to vary thetension of the spring.

' 4. A line shock absorber comprising a pair 'of' r standards, a'spring on each standard, a journal. on each standard and supported by the corresponding spring, a line'p'ulley located between" said standards and having pintles turning in said journals, each standard having a tubular part;

' the corresponding spring, comprisingia. helix, a

stop at the lower end of said tubular part engaged by the lower end of said spring, the o'crresponding journal being supportably connected with the a helix intermediate the upper and lower ends ofthe helix. i

ORVILLE B; ENGLISH. 1 

